Hanchi Auto Parts
GWIS-37A Water Pump Suitable for Isuzu 3300cc 4BC2 4BG1 High Quality
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If your parts book shows GWIS-37A, you need a water pump for 3300cc 4BC2, 4BG1, 2800cc 4BA1 and other listed engines. Ours is a matching replacement — same mounting holes, same belt pulley height, pressure-tested before packing. Related OE numbers include 5-13610-184-0, 5-13610-184-1, 8-94129-554-Z, 8-94372-119-Z/0, 8-94376-853-Z and 6 more.
Which engines use the GWIS-37A water pump?
Fitment covers 3300cc 4BC2; 4BG1; 2800cc 4BA1; 3600cc 4BE1; GWIS-35A; 4300cc 4BG1; 4BD1T.
Match your engine model to the list and the pump will fit without rework.
What are the specifications of GWIS-37A?
| Parameter | Value |
| OE number | GWIS-37A |
| Fits brand | Isuzu |
| TO Shaft head height | 149.8 |
| Mounting hole position | Aligned to OE mounting points |
| Threads on the pump body | ZG3/8 |
| Flange thread | 4-M8X1.25 |
| TO Flange height | 139.3 |
| Flange jumping | 0.07 |
| TO Impeller height Ⅰ | 0.3 |
| Installation of water pipes | Water pipe fitted complete, no deformation |
| Air tightness testing | No leakage detected under negative pressure of 0.1 MPa |
| Appearance Ⅰ | Neutral finish, no third-party logos |
| Appearance Ⅱ | Clean surface: no dirt, rust or paint peeling |
| Assembly rotation | Turns freely by hand, no sticking or noise |
| Net weight | 4.90 kg |
| Packing | 4 pcs/ctn, 21.20 kg gross |
What part numbers interchange with GWIS-37A?
One pump, many part numbers. The full cross list:
- 5-13610-184-0
- 5-13610-184-1
- 8-94129-554-Z
- 8-94372-119-Z/0
- 8-94376-853-Z
- 8-94379-924-Z/0
- 8-94439-850-Z/0
- 8-94439-851-0
- 8-97018-556-Z/0
- 8-97021-171
- 8-97021-171-Z/0/1
Packing and quality checks
For shipping estimates, count on 4 pumps per carton (21.20 kg, 58 x 44 x 21 cm).
Before boxing, each pump passes a negative-pressure leak check and a hand-rotation check for smooth, noise-free bearing movement.
Frequently asked questions
What vehicles or engines does GWIS-37A fit?
GWIS-37A fits 3300cc 4BC2, 4BG1, 2800cc 4BA1 and other listed engines. It is a Isuzu application water pump, and our aftermarket unit replaces it directly.
What other part numbers replace GWIS-37A?
GWIS-37A interchanges with 5-13610-184-0, 5-13610-184-1, 8-94129-554-Z, 8-94372-119-Z/0, 8-94376-853-Z, 8-94379-924-Z/0 and 5 more. All of these refer to the same water pump assembly.
Is GWIS-37A available from stock?
Yes, this number is in regular production. Lead time for carton quantities is usually a few days; ask us for current stock before ordering.
How much does the GWIS-37A water pump weigh?
One pump weighs 4.90 kg net. A full carton of 4 pieces comes to 21.20 kg gross.
How do I confirm GWIS-37A is the pump I need?
Check the OE number stamped on your old pump or in the parts book, then compare engine model and pulley height with the spec table on this page. If anything is unclear, send us a photo of the old unit.
Not sure this is your pump? Send a photo of the old unit and the engine tag; we will match it.
Send the OE number, your quantity and your destination port — feel free to Contact Us. We reply with fitment confirmation and a quote.
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